Cement-block machine



May 20 1924- CEMENT BLOCK MACHINE Filed May 12 1922 6 Sheets-Sheet 1 57. jwmntoz JD Crass ,1. D. CROSS CEMENT BLOQK MACHINE Filed May 12; 1922 22 Snug Mo; cm Uraas u AHM n nu nu uH- May 20, 1924. 1,494,953 J. D. CROSS CEMENT BLOCK MACHINE Filed May 12, 1922 6 Sheets-Sheet 3 May 20 4- I D. CROSS CEMENT BLOCK MACHINE Filed May '12 1922 6 SheetsSheet 5 gwu e'ntoz 64. lffia oss May 20 1924. 1,494,953

J. D. CROSS CEMENT BLOCK MACHINE Filed May 12 1922 6 Sheets-Sheet 6 fires a cores therein;

Patented May 20, 1924.

- UNITED STATES PATENT FFlC-E.-

JOHN D. oRossonALHAnrBnA, cALIromvrA. p

cnmniv'r-nnocx MACHINE.

Application filed May 2, 1922. Serial No. 560,311.

To all whom it may concern:

1% it known that I,J0HN D. CRoss, a citizen of the United States, residing at Alhambra, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in a Cement- BlockMachine; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

.The object of the invention is to provide a cement block forming or molding machine of efiicient and improved construction capable of accurate and comparatively rapid operation in the molding of blocks of variable sizesand types designed for building purposes and suitable for actuation either by poweror manually at the option of the operator or according. to whether or not a power isavailable; andwith these general ob ects in view the nvent on consists n a gitudinal section showing the mold box in the plane indicated by the line 4-4: of

itselevated and the tamper in its depressed or tamping position. v

Figure 3 is an end view with the parts in the position'indica'ted in Figure 2.

Figure 4 is a vertical sectional view on Figure 1. 1

F igure5 is a plan view. Figures 6 and 7 are transverse horizontal sections'on the planes indicated respectively p solidating the cement is a tamper 37 consistby thelines 66 and 7-7 of Figure2.

Figure 8 is a detail view in perspective of the mold box, partly broken away to show the construction and means of mounting the Figure 9 is a, similar view of the operating lever mechanism. e

Figure 10 is asimilar view of the mold box guide and palate support andthe means whereby the same is sustained in positioncores in the mold box.

for, adjustment to produceblocks of different dimensions. 7

Figure 11 is 'a vertical sectional'vievvv of the lower portion of the machine with the Figure12 is detail bottom plan view of the mold box and cores.

The apparatus embodies a frame work having uprights 20 connected longitudinally by the side beams 21 and transversely by the endbars 22 and at their upper ends by suitable bracing elements 23, and beams 21 which are preferably'of the cross sectionally angular form, serving to sustain racks 24 which constitute a support for a pallet 25,

separable from the mechanism as a means of removing the completed cement blocks from the machine. These racks consist of frames disposed in parallel'relation with flanges 26. at their lower edges forattachment by bolts 27 to the'beams 21, the horizontal elements of said beams being transverselyslotted as indicated at28 to permit of transverse adjustment of the racks to suit pallets of. difierent dimensions designed" to support blocks of difierent' sizes determinable by the dimensions of the mold box 29 which is mounted fo'rvertical movement with relation to and about-the racks-24 and is provided With terminalbrackets "30 which; are slidingly mounted upon g'uiderods 31 supported by the main frame, sleeves"32 at the ends of said arms being fitted with bushings 33 to slide on the rods which at their: upper ends are secured to the transverse bars 22 and at their lower ends are stepped in the "base. bars'34.

The mold box is of dimensions to receive the pallet 25 andv carriescores 35'which may be variedas desired in sizeand arrangement, the pallet having openings 36 through which the cores extend when the mold box is in the elevated or molding ,pos'ition indicated in Figures 2 and 3, and suspended-above the mold box in .position'to be dropped into contact with the contents, of the sameffo'r coning forexample, as indicated, of a weighted box carried by, a cross head 38 of which the extremities are attached to guide bars 39 operating in'guide openings 40 in the upper braces 23 of the frame and similar guide openings inthe cross'bars 22. The tamper rack' teeth 45 for engagement by pinions 46 raise the tamper, the cam 52 will disengage the clutch as the tamper reaches the limit of' on theoperating shaft 4c'if iiiay be',

either power driven by a pulley l8 or manually driven by a crank 49, a clutch 50 leeing provided for coupling the pulley to'the'shaft when the tamper is to be raised by power.

The clutch shifting lever 51 is arranged in the path of a trip cam 52 on the end of the.

cross head 38, so that after the tamper has been dropped to compress the charge in the mold box and the clutch has been adjusted to connect the pulley with the driveshaft to its' upward movement where it is engaged and held by the latch 40. Obviously the disengagement .of the latch by the operation of the triplever i l will permit. the tamper to the box. depressedto expose themolded block,the latter may be removed with the drop with force depending of course upon its weight sufficient to efficiently compress or consolidate the contents ofthe, mold box, and when-the tamperhas been elevated and pallet to permit of drying and hardening.

- ':l.he means for elevating and depressing the mold box, consists of a rock shaft 53 mounted insuitable bearings 54: on the sup-.

porting frame and having crank arms55 connectedby'links 56"with the mold box; The ends of'the shaft are squaredor simi-,.

larly shaped'to formwrench' seats 57'to receive an operating lever .58,which thus may ported. by

be'used'at either sideof the machine: '(or .at'

both) to suit the-convenience of the operators.

'The core blocks'in the mold box are supparallel; longitudinal bars 63 arranged in the b'oxandlongitudinally extend 'ing bolts 6e passing through the cores. are

engaged with washer plates 65 spanning said bars to clamp'thec'ores in place at the desired intervals or spacement to suit the character of the blocks tobe molded. V From' the foregoing description it 'will be obvious I that the mold box is arranged in telescoping relationwith the means, consisting in the construction,illustrated of the racks 2e, by which-the pallet is supported, so that while the mold box with its contained of the bottom of the mold box" when the;

' 1 tion withthe racks 24 toentirelygrelease. the' cores is in proper relation with the-pallet to adapt the latter to performthe. function latteris elevated to receive the cementand the impact ofthe tamper, the moldbox is adapted to be. withdrawn downwardly from the block thus molded and into housing relamolded block for removal from the machine without the risk of rdistorting or disturbing the parts thereof, and owing to-this relative arrangement and operation of the parts in connection with the elements 'employed for effecting such operation, ar-relatively' rapid and 'ac'curate molding of blocks of the de. sired dimensions may be accomplished withoperators and hence with a desirable economy in the cost of manufacture.

Having thus described the invention, what 7 I claim is I 1.A cement block'molding machine hav 'outnecessitatin'g the employment of skilled I ing a vertically movable mold box; means in telescoping relation with the box for supporting a removable pall e't, and means for} raisingand lowering the box, themeans' for supporting the pallet co 'isisting of parallel beams arranged beyond the path of movement of the box and racks arrangediwithin.

the area of thebox andsupported by saidf 50 2.. A cement block linoldingmachine hav-l beams.

ing a verticallymovable mold box, rneans in telescoping relation. with the box for" supporting a removable pallet, andmeans fo'r raising and lowering the box, the means for supporting the pallet consisting of parallel beams arranged beyond'the path.of movement of the box and racks arranged within I the. area of thefbox and supported said beams,v the racks being adjustable relative to. the'beams to accommodate different mensions of the box V 5 e- 'eme ek me d i s m' hi l iav e-av tiw y m v b e mo d be g r ee n in telescoping relation witlrthe box for. sup;

porting a] removable p'a-l et', andjmeans for raising, and lowering} the box, the mold box. havinglbi gifiudinal parallel. bars" atfitsl" bottom and cores detachably and adj ustably secured to and-supported by said bars. i

4. A cement block molding machine ha'ving a vertically movable mold box, means telescoping relation withfthe box for -sup- V seated upon said bars, .bs tsfaaeadmg ionplates spanning the barsyand e'n ga'g ed by said bolts for adjus'tably securing. the lcores to the bars. 7 i 1 5. A cement block moldingmachine'hav ing a vertically movable .xnoldboxi meahs' in;- telescoping relation with. the box'ftir supporting a removable pallet, means forfrais-l porting a removablep-allet, and means for raisingv and lowering the box, the mo-ldbox, having longitudinal parallel bars, "cores gitudinally through the icores, .iwas her ing and loweringgthe b'ox, and iia' tainper.

V 6..-A cement block molding machinehav ing. a vertically. movable mold box, means telescoping relation with the box forjsup porting a removable pallet, ,means for raising and lowering the box, said pantbein surrounded by and formingthe' bottom of the box when the latter-is slams-eat tamper normally suspended above the box for gravital movement into consolidating relation with the contents thereof, a latch for engaging and supporting the tamper in its elevated position, means for elevating the tamper into engaging relation with said latch, and means for disengaging the tamper from the elevating mechanism when it reaches the limit of its upward movement.

7. A cement block molding machine having a vertically movable mold box, means in telescoping relation with the box for supporting a removable pallet, means for raising and lowering the box, a tamper normally suspended above the box for gravital movement into consolidating relation with the contents thereof, a latch for engaging and supporting the tamper in its elevated position, means for elevating the tamper into engaging relation with said latch, and means for disengaging the tamper from the elevating mechanism when it reaches the limit of its upward movement, the means for elevating said tamper consisting of a drive shaft having pinions in engagement with racks on said tamper, and a clutch for coupling the shaft to a powerdriven pulley.

for disengaging the tamper from the elevating mechanism when it reaches the limit of its upward movement, the means for elevating said tamper consisting of a drive shaft having pinions in engagement with racks on said tamper, and a clutch for conpling the shaft to a power driven pulley, and means for releasing the tamper consisting of a trip carried thereby for disenga ing said clutch.

nttestimony whereof I aflix my signature in presence of a witness. 7;

JOHN D. CROSS:

Witness BENJAMIN Cnoss. 

